Packing-ring.



A. D. WHIDDEN.

- PACKING RING.

APPLICAT'ION FILED .FEB. 12. 1914.

1,139,004. Patented May11,1915.

ARTHUR D. WHIDDEN, 0F ELYRIA, OHIO.

PACKING-RING.

Specification of Letters Patent.

Patented May 11, 1915.

Application filed February 12, 1914. Serial No. 818,368.

To all whom it may concern:

Be it known that I, ARTHUR D. WHIDDEN, citizen of the United States,residing at Elyria, in the county of Lorain and State of Ohio, haveinvented certain new and useful Improvements in Packing-Rings, of whichthe following is aspecification.

My invention relates to new and useful improvements in packing rings forvalves, the primary object of my invention being the provision of apacking ring for use with rotary valves for internal combustion engines.

A further object of my invention is the provision of a packing ringproper, preferably formed of metal and shaped at its inner end to engagesnugly against the cylindrical face of the valve.

A still further objectof my invention is the provision of an auxiliarypacking ring of asbestos, mineral wool or other suitable materialcoacting with the first named packing ring to prevent outward leakage ofgases, an adjustable follower or clamping ring being provided forholding the two rings in proper position with respect to each other andto the surface of the valve. And a still further object of my inventionis to provide a follower or clamping member which may be spring pressedto provide for and take up wear of the packing rings to insure closefitting engagement of the packing ring against the valve at all times.

With these and other objects in view my invention will be more fullydescribed, illustrated in the accompanying drawing, and thenspecifically pointed out in the claims which are attached to and form apart of this application.

In the drawing :Figure 1 is a fragmentary transverse sectional viewtaken through a rotary valve and its casing, and through one of myimproved packing rings applied thereto; Fig. 2 is a perspective view ofthe follower or clamping ring removed from the valve structure; Fig. 3is a view similar to Fig. 1 illustrating a slightly modified form ofpacking ring and follower construction; Fi 4 is an unassembledperspective view of t e packing ring members shown in Fig. 3.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawing by the samereference characters.

The packing ring forming the subject matter of my present invention isintended primarily for use with rotary gas engine valves of the typedisclosed in my copending application, filed June 10, 1913, and bearingthe Serial No. 772,8. c9. For this reason I have illustrated the packingring in connection with a gas engine having a valve casing 10 includinginner and outer walls 11 and 12 forming an intermediate water jacketingthrough which extend ducts 18 leading from the cylinder 14 to the valveand ducts 15 permitting access to the packing ring and in someinstances, serving as intake or exhaust passages from the valve. Theinner wall 12 of the casing is cylindrical in cross section to snuglyreceive the hollow cylindrical valve 16 which, of course, is providedwith ports, not shown, adapted to register in certain positions with theleads of the ducts 18 and 15. 7

The inner face of the inner wall 12 of the valve casing about each port17 is provided with an annular seat 18 to receive the packing ringproper 19. This packing ring proper, as best shown in Fig. 4c of thedrawing, includes a body portion 20 preferably annular in shape andhaving its inner face shaped to conform with and bear against theperipheral face of the valve, as clearly shown in Figs. 1, 3 and 4 ofthe drawing. Although the seat and packing ring, thus far described, asshown, are annular, it will of course be understood that they may bemade in any desired shape, the shape generally varying according to theshape of the port in the valve 16 with which the ring is to co-act.

The outer face of the packing ring is provided with an outwardlydirected annular flange 21 which extends in parallel spaced relation tothe wall ofthe duct 15 to provide space for an auxiliary packing ring 22of asbestos, mineral wool or other suitable material.

A clamping ring 23 is inserted to bear against the packing ring 22 toforce the latter into close engagement with the packing ring 19, itsflange 21 and the wall of the duct 15. This clamping ring is provided.with two or more spaced apart legs 24: which extend longitudinally ofthe duct 15 and against which the inner edge of a clamp screw 25,threaded into the outer end of the duct 15, bears.

If the port for which the packing ring structure above described isprovided, is a port communicating with a duct 13 leading to thecylinder, this clamp screw 25 will be constructed in the form of a solidplug or ca closing the outer end of the duct 15. On the other hand, ifthe port is an inlet or exhaust port between the valve and the intake orexhaust manifold of the engine, that a is, if there is no duct 13leading to such port, the clamp screw 25 will be in the form of a ringcoupling connecting the manifold lead with the valve casing 11. Ineither event, the clamp screw 25 may be readily adjusted to apply theproper amount of pressure to the clamp ring 23 to suitably expand thefiber packing ring 22.

In Figs. 3 and 4 of the drawing, I have illustrated a slightly modifiedform of pack ing ring, the sole difference consisting in theconstruction of the clamping ring, there indicated as a whole by thenumeral 26 and of the clamping screw, there indicated as a whole by thenumeral 27. In this form of my invention, the clamping ring 26 includesan annular body member or follower 28 provided at its outer edge withspaced converging legs 29 connected at their free ends to a common footor hearing plate 30. The clamp screw 27 preferably has its outer facerecessed as at 31 and is provided with an annular flange 32 threaded atits outer end to receive a cap 33. Further, the clamp screw isperforated centrally of the flange 32 as shown at 34 to receive aclamping pin 35, one end of which bears against the foot 30-of theclamping ring and the other endof which carries a cylindrical head 36provided at its inner end with a circumferential flange 37 to seat theinner end of a helical spring 38, the outer end of which bears againstthe cap 33. With this form of clamp screw, it will be apparent that thespring 38 will exert a constant pressure against the head 36 of the pin35 causing the latter to bear firmly against the clamping ring 26 tohold the same in firm and constant engagement with the fiber packingring 22.

The foregoing description, taken in connection withthe drawing, clearlydiscloses the application and operation of my improved clamping ring andany further description is therefore deemed unnecessary.

It will of course be understood that minor changes, within the scope ofthe appended claims, may be made at any time, without in the slightestdegree departing from the spirit of my invention.

Having thus described the invention, what is claimed as new is:

1. In a packing ring construction, the combination with a valve casinginclosing a rotary cylindrical valve and having a duct leading throughthe casing to the valve, of a packing ring including an annular bodymember positioned in a seat formed in the inner face of the valve casingabout the inner end of the duct and having its inner end shaped toconform to the outer face of the valve, an outwardly directed flangeformed upon the ring, an asbestos packing ring seating between saidflange and the wall of the duct, a clamping ring engaging against theasbestos ring and provided with converging legs, a foot carried 'by thelegs, and a clamp screw threaded in the outer end of the duct andoperatively engaging the foot to force the clamping ring inwardly.

2. In a packing ring construction, the combination with a valve casinginclosing a rotary cylindrical valve and having a duct leading throughthe casing to the valve, of a packing ring including an annular bodymember positioned in a seat formed in the inner face of the valve casingabout the inner end of the duct and having its inner end shaped toconform "to the outer face of the valve, an outwardly directed flangeformed upon the ring, an asbestos packing ring seating between saidflange and the wall of the duct, a clamping ring engaging against theasbestos ring and provided with converging legs, a foot carried by thelegs, and a clamp screw threaded in the outer end of the duct andoperatively engaging the foot to force the clamping ring inwardly, saidclamp screw including a pin engaging the foot, and a spring holding thepin in such engagement.

3. In a packing ring construction, the combination with a valve casinginclosing a rotary cylindrical valve and having a duct leading throughthe casing to the valve, of a packing ring including an annular bodymember positioned in a seat formed in the inner face of the valve casingabout the inner'end of the'duct and having its inner end shaped toconform to the outer face of the valve, an outwardly directed flangeformed upon the ring, an asbestos packing ring seating between saidflange and the wall of the duct, a clamping ring engaging against theasbestos ring and provided with converging legs, a foot carried by thelegs, and a clamp screw threaded in the outer end of the duct andoperativ'ely engaging the foot to force the clamping ring inwardly, saidclamping screw including a body perforated centrally and provided with acircumferential outwardly directed flange, a pin extending In testimonywhereof I aifix my signature through the pefrffiratlion of the bodyfltoend: in presence of two witnesses.

a ethe ooto t ec am ingrin ,a ange t mfd carried by the pin Ztndl seating within ARTHUR WHIDDEN' 5 the flange, a cap threaded upon the freeend Witnesses:

of the flange, and a spring bearing between FRANK WILFORD, the flange ofthe head and the cap. LINDA KRAUSE.

G'opies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

' Washington, D. G,

